Probably not a popular opinion? I'm delighted with my mk2 as it is, I wouldn't mind if it didn't upgrade. This unit does everything I need and way way way more.
I'm still after 3 years of owning, only scratching the surface of its capabilities/ possibilities.
I feel a lot of my "creative" time is spent trying "new tweaks" after firmware updates, rather than actually playing and making music.
I understand the desire to recreate classic tones etc, but I believe the best guitar tones have still to be discovered, I know all the tools for me to create great tones new or old, live inside my mk2 as it stands and doesn't need to be improved?
If anything needs updating/ improving it would be my musical imagination?